Enable OneDrive backup on Mac similar to the Windows version.
Put your votes on this formulation of the same idea instead (is gaining a lot of votes, and may finally make MS implement this as on PC): https://onedrive.uservoice.com/forums/913525-onedrive-on-mac/suggestions/34742176-kfm-known-folder-move-for-mac
Kevin Le commented
OneDrive to rule them all!!!